WO2001082511A3 - Frequency selective rf output power calibration using digital and analog power measurements for use in a cellular telecommunications system - Google Patents

Frequency selective rf output power calibration using digital and analog power measurements for use in a cellular telecommunications system Download PDF

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Publication number
WO2001082511A3
WO2001082511A3 PCT/SE2001/000771 SE0100771W WO0182511A3 WO 2001082511 A3 WO2001082511 A3 WO 2001082511A3 SE 0100771 W SE0100771 W SE 0100771W WO 0182511 A3 WO0182511 A3 WO 0182511A3
Authority
WO
WIPO (PCT)
Prior art keywords
digital
gain
power
carrier frequency
signal
Prior art date
Application number
PCT/SE2001/000771
Other languages
French (fr)
Other versions
WO2001082511A2 (en
Inventor
Der Pol Harry Van
Original Assignee
Ericsson Telefon Ab L M
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Ericsson Telefon Ab L M filed Critical Ericsson Telefon Ab L M
Priority to AU2001250714A priority Critical patent/AU2001250714A1/en
Publication of WO2001082511A2 publication Critical patent/WO2001082511A2/en
Publication of WO2001082511A3 publication Critical patent/WO2001082511A3/en

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Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W52/00—Power management, e.g. TPC [Transmission Power Control], power saving or power classes
    • H04W52/04—TPC
    • H04W52/52—TPC using AGC [Automatic Gain Control] circuits or amplifiers

Abstract

In the context of a wideband CDMA (WCDMA) type base station (BS) in a cellular telecommunications network, radio frequency (RF) gain is accurately controlled for each of multiple carrier frequency bands without having to disturb the normal operation of the amplifier chain once installed at the BS. The power of a summed or combined digital baseband user signal is determined and integrated over a specific time interval. The digital baseband signal is upconverted and amplified by one or more (e.g., a chain of) RF amplifiers. The power of the transmitted RF signal (downlink signal transmitted by the BS) is detected in a frequency selective manner, and integrated over the same time interval. The difference between the integrated baseband power and the RF transmit power is determined to provide an overall gain for the RF chain for the specific carrier frequency measured. This gain value is compared with a target gain value to determine a gain adjustment or correction factor which is applied in the digital domain prior to digital-to-analog conversion (DAC). Accordingly, gain control for each of a plurality of different carrier frequency bands is substantially continuously performed during normal operation of the BS.
PCT/SE2001/000771 2000-04-24 2001-04-06 Frequency selective rf output power calibration using digital and analog power measurements for use in a cellular telecommunications system WO2001082511A2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AU2001250714A AU2001250714A1 (en) 2000-04-24 2001-04-06 Frequency selective rf output power calibration using digital and analog power measurements for use in a cellular telecommunications system

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US09/556,502 2000-04-24
US09/556,502 US6633766B1 (en) 2000-04-24 2000-04-24 Frequency selective RF output power calibration using digital and analog power measurements for use in a cellular telecommunications system

Publications (2)

Publication Number Publication Date
WO2001082511A2 WO2001082511A2 (en) 2001-11-01
WO2001082511A3 true WO2001082511A3 (en) 2002-02-28

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/SE2001/000771 WO2001082511A2 (en) 2000-04-24 2001-04-06 Frequency selective rf output power calibration using digital and analog power measurements for use in a cellular telecommunications system

Country Status (3)

Country Link
US (1) US6633766B1 (en)
AU (1) AU2001250714A1 (en)
WO (1) WO2001082511A2 (en)

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US7146139B2 (en) * 2001-09-28 2006-12-05 Siemens Communications, Inc. System and method for reducing SAR values
US7053629B2 (en) * 2001-09-28 2006-05-30 Siemens Communications, Inc. System and method for detecting the proximity of a body
JPWO2003055252A1 (en) * 2001-12-21 2005-04-28 三菱電機株式会社 Wireless communication system and transmitter
US7197276B2 (en) * 2002-03-15 2007-03-27 Broadcom Corporation Downstream adaptive modulation in broadband communications systems
FI20020990A (en) * 2002-05-27 2003-11-28 Nokia Corp A method for controlling signal power in a transmitter in a radio system and a transmitter in a radio system
US6868263B2 (en) * 2002-06-10 2005-03-15 Qualcomm Incorporated Digital automatic gain control
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US7809393B2 (en) * 2003-05-09 2010-10-05 Nxp B.V. Method and arrangement for setting the transmission of a mobile communication device
US7203494B2 (en) * 2004-11-12 2007-04-10 Motorola, Inc. Optimizing radio communication efficiency and methods thereof
US7269422B2 (en) * 2005-07-08 2007-09-11 Telefonaktiebolaget Lm Ericsson (Publ) Wireless telecommunications with adjustment of uplink power level
US8565806B2 (en) * 2010-12-12 2013-10-22 St-Ericsson Sa Real time transmission power control
CN105517138A (en) * 2014-10-17 2016-04-20 中兴通讯股份有限公司 Gain adjustment method and apparatus

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Publication number Priority date Publication date Assignee Title
US5193223A (en) * 1990-12-20 1993-03-09 Motorola, Inc. Power control circuitry for a TDMA radio frequency transmitter
WO1997009794A1 (en) * 1995-09-08 1997-03-13 Qualcomm Incorporated Apparatus and method for controlling the actual transmission power of a base station in a cellular communications system
US5732334A (en) * 1996-07-04 1998-03-24 Mitsubishi Denki Kabushiki Kaisha Radio transmitter and method of controlling transmission by radio transmitter

Also Published As

Publication number Publication date
US6633766B1 (en) 2003-10-14
AU2001250714A1 (en) 2001-11-07
WO2001082511A2 (en) 2001-11-01

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